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| author | Nathaniel Shead <nathanieloshead@gmail.com> | 2024-08-12 10:57:39 +1000 |
|---|---|---|
| committer | Nathaniel Shead <nathanieloshead@gmail.com> | 2024-11-05 11:33:42 +1100 |
| commit | a96c774f7bb99729ab9e7e2a57cd970469ccbc08 (patch) | |
| tree | 458e47dfe9d468dd919f97c10216bfcc34ece5e2 /gcc/config.gcc | |
| parent | 48ef485eabc8fd3e16d184860ce693816f3919eb (diff) | |
| download | gcc-a96c774f7bb99729ab9e7e2a57cd970469ccbc08.zip gcc-a96c774f7bb99729ab9e7e2a57cd970469ccbc08.tar.gz gcc-a96c774f7bb99729ab9e7e2a57cd970469ccbc08.tar.bz2 | |
c++/modules: Merge default arguments [PR99274]
When merging a newly imported declaration with an existing declaration
we don't currently propagate new default arguments, which causes issues
when modularising header units. This patch adds logic to propagate
default arguments to existing declarations on import, and error if the
defaults do not match.
PR c++/99274
gcc/cp/ChangeLog:
* module.cc (trees_in::is_matching_decl): Merge default
arguments.
* tree.cc (cp_tree_equal) <AGGR_INIT_EXPR>: Handle unification
of AGGR_INIT_EXPRs with new VAR_DECL slots.
gcc/testsuite/ChangeLog:
* g++.dg/modules/lambda-7.h: Skip ODR-violating declaration when
testing ODR deduplication.
* g++.dg/modules/lambda-7_b.C: Note we're testing ODR
deduplication.
* g++.dg/modules/default-arg-1_a.H: New test.
* g++.dg/modules/default-arg-1_b.C: New test.
* g++.dg/modules/default-arg-2_a.H: New test.
* g++.dg/modules/default-arg-2_b.C: New test.
* g++.dg/modules/default-arg-3.h: New test.
* g++.dg/modules/default-arg-3_a.H: New test.
* g++.dg/modules/default-arg-3_b.C: New test.
Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>
Reviewed-by: Patrick Palka <ppalka@redhat.com>
Reviewed-by: Jason Merrill <jason@redhat.com>
Diffstat (limited to 'gcc/config.gcc')
0 files changed, 0 insertions, 0 deletions